From patchwork Thu Nov 2 10:13:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 740493 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EB8B12B8C for ; Thu, 2 Nov 2023 10:13:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="PzwFOI2l" Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15D5B131 for ; Thu, 2 Nov 2023 03:13:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698920008; x=1730456008; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+Z/QjL4c11dFL7cYIx9QB1bsJdnkklZS2hx2d7+OSs4=; b=PzwFOI2l1n3dVMArQxH+IsH0LgiTCGl/TpJ2R84L/gTPiuxk7Iz05p01 3LA2tKzbFuiadY0yN1oGG6zfuVSZM1UVKi9vBL0ghRzMWFhtxKvlMAZSd sQj8h2iB8ROZJzUuCKz/10gpvcsHFhLFY7vimmVtX1vVx5y5EAl47l7YJ WtU6CwqB8j4OPb8m+25sA/Qu4+2ixfjtzWlTq2n0/T9QbOkWehmyr7v8W tMe8W8uczPMX5ssbILPhEykWV3RuI5hGmsZpNGFOuv0zrvVobNk9Jb+PT CEIGrGdr54I75llOtLtZktAhEGn5XcIsVEoEbQJDkMAsTsD5CpbsgHQmz Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10881"; a="7318643" X-IronPort-AV: E=Sophos;i="6.03,271,1694761200"; d="scan'208";a="7318643" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Nov 2023 03:13:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10881"; a="904969781" X-IronPort-AV: E=Sophos;i="6.03,271,1694761200"; d="scan'208";a="904969781" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Nov 2023 03:13:22 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 466DE120819; Thu, 2 Nov 2023 12:13:19 +0200 (EET) From: Sakari Ailus To: linux-acpi@vger.kernel.org Cc: andriy.shevchenko@linux.intel.com, Daniel Scally , Heikki Krogerus , "Rafael J. Wysocki" Subject: [PATCH v3 2/3] software node: Let args be NULL in software_node_get_reference_args Date: Thu, 2 Nov 2023 12:13:15 +0200 Message-Id: <20231102101316.1186215-3-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231102101316.1186215-1-sakari.ailus@linux.intel.com> References: <20231102101316.1186215-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 fwnode_get_property_reference_args() may not be called with args argument NULL and while OF already supports this. Add the missing NULL check. The purpose is to be able to count the references. Fixes: b06184acf751 ("software node: Add software_node_get_reference_args()") Signed-off-by: Sakari Ailus --- drivers/base/swnode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 1886995a0b3a..079bd14bdedc 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -541,6 +541,9 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode, if (nargs > NR_FWNODE_REFERENCE_ARGS) return -EINVAL; + if (!args) + return 0; + args->fwnode = software_node_get(refnode); args->nargs = nargs;